Be careful if you are running the stock shifter, the factory shift forks in the T5 suck, I know, I have broken several, get you a pro-5.0 shifter, or a B&M ripper, something with adjustable stops and have it put in and adjusted properly, it will go a LONG way to keeping your tranny happy, good runs by the way, my pretty much stock 86 with a 3.55 gear used to run dead even with a buddies firehawk, but it was an LT1, the speed density stangs run pretty well.